@article{MS2_1972__31_166279,
     author = {Anders Grennberg},
     title = {Sets of {Divergence} of {Fourier} {Series.}},
     journal = {Mathematica Scandinavica},
     pages = {310--318},
     publisher = {mathdoc},
     volume = {31},
     year = {1972},
     zbl = {0256.42007},
     url = {http://geodesic.mathdoc.fr/item/MS2_1972__31_166279/}
}